vSphere 6.0 is now fully available and ready to be rolled. Here I would sit tight and wait for 6.1 to be out. As long as you want to deploy 6.0 in your Test and Dev environment it is fair enough. History shows that all 0 versions (3.0, 4.0, 5.0) were little bumpy and all 1's (4.1, 5.1) were most stable apart from 3.5. But this is my personal view.